Machine Components

Recommended Prerequisites

Materials, Solid Mechanics and Structures.

Teaching Methods

The lectures are designed for the presentation and development of the topics that correspond to the course syllabus. During practical classes the concepts taught in lectures are applied to real problems. During practical classes the student has an active participation suggesting strategies for solving the problems posed. Students should also do a small project that includes the majority of machine elements analyzed in the curriculum.

Learning Outcomes

TIt is intended to give the student a broad knowledge of various mechanical components, and an introduction to the calculation of mechanical components for reduced complexity project addressing static and fatigue behaviour. Calculation methods are presented for static and fatigue design of shafts and screws. Will be summary analyzed the mechanical transmissions, and even rolling bearings and lubrication. At the end of the course, students will be able to make the design of mechanical elements of low complexity based on analytical methods and develop a critical sense.

Work Placement(s)

No

Syllabus

General concepts: Ruin of materials, Mechanical properties of materials, Safety stresses and safety factor, resistance criteria, stress concentration factor; Fatigue: Characterization of the process, S-N curves, parameters, Shafts and other transmission devices: Design against fatigue, Design against deformation, Materials, keys, Couplings shaft; Screws: Types of screws, Motion screws, Screws with pre-stress, shear screws connections; Mechanical transmissions: performance, parameters and comparative analysis, Transmissions gears (geometry, kinematics analysis, dynamic analysis), Transmissions belts (Geometries, Dynamic Analysis); Rolling bearings: Types, Life, Load capacity, Selection of ball bearings; Lubrication and lubricants: Types of lubrication; lubricants (Properties and classification).

Assessment Methods

Assessment
Synthesis work: 25.0%
Frequency: 75.0%

Bibliography

C.M. Branco, J.A.M. Ferreira, J.D.M. Costa e A. Ribeiro “Projecto de Orgãos de Máquinas”, Ed. Fundação C. Gulbenkian, 2005.

R. C. Juvinal, K. M. Marshek, “Fundamentals of Machine Component Design”, Ed. John Wiley & Sons, 1991.

J. R. Shigley, C. R. Mischke, “Mechanical Engineering Design”, McGraw-Hill International Edition, 1989.

R. L. Norton, “Machine Design – an Integrated Approach”, Ed. Prentice Hall Inc., 1996.